DL 2447 then WN 2423 at Phoenix
Seattle → Phoenix → Dallas
Timetable, Phoenix time
23:56DL 2447 from Seattle at the gate
18:30WN 2423 to Dallas leaves the gate
18 h 34 apart on the timetable, overnight
WN 2423 leaves 18 h 34 after DL 2447 arrives on the timetable: more than half a day, so not a connection we count.